Mastering Addition & Subtraction: Key Info & Estimation

Lily has 12 apples. She gives 4 apples to her friend. How many apples does Lily have left?

• 12

• 8

• 10

• 6

Tom has 15 toy cars. He buys 7 more toy cars. How many toy cars does Tom have now?

• 25

• 20

• 22

• 18

There are 20 students in a class. If 5 students go home early, how many students are still in the class?

• 15

• 5

• 20

• 10

Sarah has 10 stickers. She finds 5 more stickers on the ground. How many stickers does Sarah have in total?

• 20

• 5

• 10

• 15

A farmer has 30 chickens. He sells 10 chickens at the market. How many chickens does the farmer have now?

• 10

• 15

• 25

• 20

Emma has 25 candies. She eats 8 candies. How many candies does Emma have left?

• 10

• 17

• 15

• 20

A library has 50 books. If 15 books are checked out, how many books are left in the library?

• 50

• 35

• 40

• 25

Jack has 18 marbles. He loses 6 marbles while playing. How many marbles does Jack have now?

• 10

• 12

• 8

• 15

There are 40 balloons at a party. 12 balloons pop. How many balloons are still inflated?

• 35

• 25

• 30

• 28

Mia has 22 crayons. She gives 10 crayons to her friend. How many crayons does Mia have now?

• 20

• 15

• 12

• 10